YAOUNDE - How witchcraft corrodes the African economy and society - "Under the guise of witchcraft people are tortured, murdered and development money is wasted. But local governments and international aid organisations remain passive," write Alberique Houndjo (Benin), Chief Bisong Etahoben (Cameroon), Fidelis Mac-Leva (Nigeria), Anneke Verbraeken (The Netherlands).